org.apache.hadoop.hive.ql.optimizer

Class ColumnPrunerProcFactory

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.ColumnPrunerProcFactory

public final class ColumnPrunerProcFactory
extends Object

Factory for generating the different node processors used by ColumnPruner.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ColumnPrunerProcFactory.ColumnPrunerDefaultProc The Default Node Processor for Column Pruning.
static class	ColumnPrunerProcFactory.ColumnPrunerFilterProc Node Processor for Column Pruning on Filter Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerGroupByProc Node Processor for Column Pruning on Group By Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerJoinProc The Node Processor for Column Pruning on Join Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerLateralViewForwardProc The Node Processor for Column Pruning on Lateral View Forward Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerLateralViewJoinProc The Node Processor for Column Pruning on Lateral View Join Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerLimitProc
static class	ColumnPrunerProcFactory.ColumnPrunerMapJoinProc The Node Processor for Column Pruning on Map Join Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerPTFProc - Pruning can only be done for Windowing.
static class	ColumnPrunerProcFactory.ColumnPrunerReduceSinkProc The Node Processor for Column Pruning on Reduce Sink Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerScriptProc
static class	ColumnPrunerProcFactory.ColumnPrunerSelectProc The Node Processor for Column Pruning on Select Operators.
static class	ColumnPrunerProcFactory.ColumnPrunerTableScanProc The Node Processor for Column Pruning on Table Scan Operators.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.commons.logging.Log	LOG

Method Summary

Methods

Modifier and Type	Method and Description
static ColumnPrunerProcFactory.ColumnPrunerDefaultProc	getDefaultProc() Factory method to get the ColumnPrunerDefaultProc class.
static ColumnPrunerProcFactory.ColumnPrunerFilterProc	getFilterProc() Factory method to get the ColumnPrunerFilterProc class.
static ColumnPrunerProcFactory.ColumnPrunerGroupByProc	getGroupByProc() Factory method to get the ColumnPrunerGroupByProc class.
static ColumnPrunerProcFactory.ColumnPrunerJoinProc	getJoinProc() The Factory method to get ColumnJoinProc class.
static ColumnPrunerProcFactory.ColumnPrunerLateralViewForwardProc	getLateralViewForwardProc()
static ColumnPrunerProcFactory.ColumnPrunerLateralViewJoinProc	getLateralViewJoinProc()
static ColumnPrunerProcFactory.ColumnPrunerLimitProc	getLimitProc()
static ColumnPrunerProcFactory.ColumnPrunerMapJoinProc	getMapJoinProc() The Factory method to get ColumnMapJoinProc class.
static ColumnPrunerProcFactory.ColumnPrunerPTFProc	getPTFProc() Factory method to get the ColumnPrunerGroupByProc class.
static ColumnPrunerProcFactory.ColumnPrunerReduceSinkProc	getReduceSinkProc() The Factory method to get ColumnPrunerReduceSinkProc class.
static ColumnPrunerProcFactory.ColumnPrunerScriptProc	getScriptProc()
static ColumnPrunerProcFactory.ColumnPrunerSelectProc	getSelectProc() The Factory method to get the ColumnPrunerSelectProc class.
static ColumnPrunerProcFactory.ColumnPrunerTableScanProc	getTableScanProc() Factory method to get the ColumnPrunerDefaultProc class.
static void	setupNeededColumns(TableScanOperator scanOp, RowSchema inputRS, List<String> cols)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

protected static final org.apache.commons.logging.Log LOG

Method Detail

getFilterProc

public static ColumnPrunerProcFactory.ColumnPrunerFilterProc getFilterProc()

Factory method to get the ColumnPrunerFilterProc class.

Returns:

ColumnPrunerFilterProc

getGroupByProc

public static ColumnPrunerProcFactory.ColumnPrunerGroupByProc getGroupByProc()

Factory method to get the ColumnPrunerGroupByProc class.

Returns:

ColumnPrunerGroupByProc

getLimitProc

public static ColumnPrunerProcFactory.ColumnPrunerLimitProc getLimitProc()

getScriptProc

public static ColumnPrunerProcFactory.ColumnPrunerScriptProc getScriptProc()

getPTFProc

public static ColumnPrunerProcFactory.ColumnPrunerPTFProc getPTFProc()

Factory method to get the ColumnPrunerGroupByProc class.

Returns:

ColumnPrunerGroupByProc

getDefaultProc

public static ColumnPrunerProcFactory.ColumnPrunerDefaultProc getDefaultProc()

Factory method to get the ColumnPrunerDefaultProc class.

Returns:

ColumnPrunerDefaultProc

setupNeededColumns

public static void setupNeededColumns(TableScanOperator scanOp,
                      RowSchema inputRS,
                      List<String> cols)
                               throws SemanticException

Throws:

SemanticException

getTableScanProc

public static ColumnPrunerProcFactory.ColumnPrunerTableScanProc getTableScanProc()

Factory method to get the ColumnPrunerDefaultProc class.

Returns:

ColumnPrunerTableScanProc

getReduceSinkProc

public static ColumnPrunerProcFactory.ColumnPrunerReduceSinkProc getReduceSinkProc()

The Factory method to get ColumnPrunerReduceSinkProc class.

Returns:

ColumnPrunerReduceSinkProc

getSelectProc

public static ColumnPrunerProcFactory.ColumnPrunerSelectProc getSelectProc()

The Factory method to get the ColumnPrunerSelectProc class.

Returns:

ColumnPrunerSelectProc

getLateralViewJoinProc

public static ColumnPrunerProcFactory.ColumnPrunerLateralViewJoinProc getLateralViewJoinProc()

getLateralViewForwardProc

public static ColumnPrunerProcFactory.ColumnPrunerLateralViewForwardProc getLateralViewForwardProc()

getJoinProc

public static ColumnPrunerProcFactory.ColumnPrunerJoinProc getJoinProc()

The Factory method to get ColumnJoinProc class.

Returns:

ColumnPrunerJoinProc

getMapJoinProc

public static ColumnPrunerProcFactory.ColumnPrunerMapJoinProc getMapJoinProc()

The Factory method to get ColumnMapJoinProc class.

Returns:

ColumnPrunerMapJoinProc